Remove Weapons From Storage Option

Some purchased/timed weapons have the option to be sold back with "RESELL" option to clear up inventory. How can I do the same for some of the weapons that I won from Zombie mode, or the weapons that I won from crates. I understand that some people enjoy collecting weapons, but collecting the same weapon multiple times does not bring me joy. Now I have to scroll through garbage in my inventory just to find what I am looking for. I only need ONE primary weapon of each kind. What am I missing? Is there a trick to remove weapons from storage?